Loans And The Allowance For Loan Losses (Recorded Investment In Loans Past Due) (Details) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Balance		$ 1,037,496	$ 911,296
Non-accruing Loans		13,041	11,298
Total balance		1,064,128	941,729
30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		10,782	14,002
60-89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		2,135	4,411
90+ Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		674	722
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Balance		225,915	184,872
Non-accruing Loans		1,749	3,106
Total balance		232,211	197,371
Commercial And Industrial [Member] | 30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		4,019	6,567
Commercial And Industrial [Member] | 60-89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		163	2,826
Commercial And Industrial [Member] | 90+ Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		365
Consumer And Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Balance		1,628	1,387
Non-accruing Loans		9	17
Total balance		1,654	1,417
Consumer And Other Loans [Member] | 30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		11	3
Consumer And Other Loans [Member] | 60-89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		6	10
Consumer And Other Loans [Member] | 90+ Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due
Total Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total balance		830,263	742,941
Total Real Estate Loans [Member] | Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total balance	[1]	133,342	121,082
Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total balance	[1]	627,176	555,625
Total Real Estate Loans [Member] | Home Equities [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Balance		68,415	64,868
Non-accruing Loans		1,119	1,261
Total balance		69,745	66,234
Total Real Estate Loans [Member] | Home Equities [Member] | 30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		171	105
Total Real Estate Loans [Member] | Home Equities [Member] | 60-89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		40
Mortgages [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Balance		129,251	116,876
Non-accruing Loans		1,226	862
Total balance		131,208	118,542
Mortgages [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member] | 30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		731	751
Mortgages [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member] | 60-89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due			53
Mortgages [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Balance		508,044	452,187
Non-accruing Loans		8,938	1,874
Total balance		519,902	462,385
Mortgages [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member] | 30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		2,611	6,319
Mortgages [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member] | 60-89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due			1,522
Mortgages [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member] | 90+ Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		309	483
Construction [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Balance		2,134	2,540
Non-accruing Loans
Total balance		2,134	2,540
Construction [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member] | 30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due
Construction [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member] | 60-89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due
Construction [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member] | 90+ Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due
Construction [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Balance		102,109	88,566
Non-accruing Loans			4,178
Total balance		107,274	93,240
Construction [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member] | 30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		3,239	257
Construction [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member] | 60-89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,926
Construction [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member] | 90+ Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due			$ 239

[1] includes construction loans